<%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE html>
<html>
<head>
    <title>更换头像</title>
</head>
<body>
    <form action="/replaceImg" method="post" enctype="multipart/form-data">
        要更换的头像：<p><input type="file" name="file"></p>
        <input type="submit" value="更换">
    </form>
</body>
</html>